html,body{
  height: 100%;
  width: 100%;
}
body{
  background-color: aqua;
}
#logo{
  margin-left: 240px;
  margin-top: 20px;
}
.box{
  width: 400px;
  height: 310px;
  background-color: aquamarine;
  box-shadow: 5px 5px 5px 5px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
h1{
  text-align: center;
  height: 60px;
  line-height: 60px;
  font-size: 26px;
}
form{
 margin: 0 30px;
}
a{
  float: right;
}
.layui-form-item{
  position: relative;
}
.layui-icon{
  position: absolute;
  top: 9px;
  left: 6px;
}
.layui-input{
 padding-left: 24px;
}
.register{
  display: none;
}